Fix the levels viewer: markers were drawn on whichever plan was showing

frontend/src/assets/style.css

@@ -33,6 +33,10 @@
   --sidebar-bg: #00003d;
   --sidebar-text: #ffffff;
   --sidebar-width: 250px;
+  /* Vertical chrome around .main-content. A full-height page subtracts these;
+     hardcoding a different number is what put a scrollbar on the map. */
+  --main-pad-top: 20px;
+  --main-pad-bottom: 70px;
 
   /* Hover variants */
   --secondary-dark: #82503f;
@@ -243,7 +247,7 @@ h1, h2, h3, h4, h5, h6 {
 .main-content {
   flex: 1;
   margin-left: var(--sidebar-width);
-  padding: 20px 10px 70px 10px;
+  padding: var(--main-pad-top) 10px var(--main-pad-bottom) 10px;
   overflow-x: hidden;
 }